all arrive at the Inn,Inouske Zenitsu, and Tanjiro where laying all on futons on the floor to sleep,you're a demon in the box that Tanjiro carries.Your Tanjiros little sister.

Zenitsu asks Tanjiro why he carried a demon in the box,Tanjiro answered him and told him about you, and this made Zenitsu angry since Zenitsu wanted a girl too Zenitsu looked at the box you were in usual,scared of demons,but smth in him wanted to see you, when everyone was asleep,he pulls the box to himself